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JOURNAL OF MAMMALOGY 
differing conspicuously from S. sulcatus in the flattening of the rostrum anteriorly 
and from S. crassangulum in the wider spacing and apparently greater size of the 
teeth. A shallow, broadly V-shaped groove occupies the midline of the palate 
and gradually fades out toward the tip of the beak. From the edge of this groove 
the plane of the maxilla slopes gently upward and outward to the strongly rounded 
lateral border, but near the tip of the beak the palate becomes nearly flat. The 
alveoli are large, the more proximal the smaller and separated by an interval 
less than the length of a single alveolus. The more anterior sockets are larger 
and farther apart, being separated by an interval nearly 1| the length of a single 
alveolus. The alveoli themselves are nearly oval in outline, the more proximal 
directed slightly outward and forward, but the more distal with their long axes 
nearly parallel to the tooth rows. 
Description . — This species is represented in the collection of the Florida Geo- 
logical Survey by two fragments of the rostrum. The larger, here made the type 
of the species, is a section broken from slightly in advance of the palatal portion 
of the vomer. Its length is 283 mm., its breadth at base 48 mm., tapering to 37 
mm. wide at the broken distal end. Its left basal end just includes the beginning 
of the deep longitudinal groove separating maxillary and intermaxillary. The 
combined intermaxillaries are at this point high (13 mm. above the groove) and 
broad (32 mm.) but become depressed and flattened forward, though losing little 
of their width. Though the right intermaxillary is very slightly the narrower, 
there is no marked asymmetry. 
The large alveoli are nearly oval in outline and shallow. The first six or seven 
at the proximal end of the fragment are smaller and closer together than those 
succeeding and have their long axes turned slightly outward. The proximal 
four of the right side are smaller and closer together than those corresponding 
on the left side, and are included within a space of 31 mm. The separate alveoli 
average 6 by 3.5 mm., and are about 2 mm. apart. Beyond this point they are 
larger and of nearly uniform size, about 7.5 by 4.5. mm., elliptical in outline with 
their long axes parallel to the tooth row. The interspaces gradually increase to 
about 10 mm. at the anterior end of the fragment. 
The second specimen (5885 Fla. Geol. Surv.) referred to this species, came from 
much nearer the tip of the beak. It is 172 mm. long, 28 mm. wide at the proximal 
and 25 mm. wide at the distal end. Its dorsal portion is largely formed by the 
intermaxillae, which are nearly flat above, and have fused medially so that no 
trace of the original suture is evident. The combined width of the intermaxillae 
is 18 mm. proximally and 13.5 mm. distally. This portion of the beak is strongly 
flattened dorsoventrally so that the palatal surface is nearly parallel to that of 
the intermaxillaries. Laterally, however, the maxillaries are slightly bevelled 
outward from the palate, and the tooth sockets are situated along this narrow 
bevelled area so that they are visible in side view. The comparatively large size, 
nearly elliptical outline, and wide spacing of these shallow sockets are maintained 
very uniformly to the anterior end of the specimen, which must have included 
all but a very small portion of the tip of the beak. The groove marking the line 
between maxillaries and intermaxillaries becomes much shallower on the right- 
hand side than on the left, though in the larger fragment this disparity was not 
noticeable. 
